Atmel AT7910E Manual de usuario descargar pdf (Pagina 14)

AT7910E [DATASHEET]

7796G AERO 02/13

5.2 Pin Description

Table 5-2. Pin Description

Signal Name(1)(3)

Type(2)

Function

Buffer type

VDDA

VDDB

VDDPLL

3.3V Power for the device

POWER

VSSA

VSSB

VSSPLL

Ground for the device

POWER

LVDSRef

LVDS Power reference for the device

POWER

VCOBias

Bias for the PLL VCO (Rvco)

LoopFilter

Internal PLL filter

CLK

System Clock - Provides the reference clock for all the

AT7910E modules except the SpaceWire interface

receivers

CMOS3V3

RST*

Asynchronous active low system reset

CMOS3V3

FEEDBDIV[2:0]

PLL feedback divider configuration - Set the internal PLL

output clock rate

CMOS3V3

DOUT+[1:8]

DOUT-[1:8]

Differential output pair - Data part of Data-Strobe

SpaceWire link 1 to 8.

LVDS+ LVDS-

SOUT+[1:8]

SOUT-[1:8]

Differential output pair - Strobe part of Data-Strobe

SpaceWire link 1 to 8.

LVDS+ LVDS-

DIN+[1:8]

DIN-[1:8]

Differential input pair - Data part of Data-Strobe

SpaceWire link 1 to 8.

LVDS+ LVDS-

SIN+[1:8]

SIN-[1:8]

Differential input pair - Strobe part of Data-Strobe

SpaceWire link 1 to 8.

LVDS+ LVDS-

EXTOUTDATA9[8:0]

Output data from external port zero FIFO.

Bit eight determines the data type data, EOP or EEP

CMOS3V3

EXTINDATA9[8:0]

Input data from external port zero FIFO.

Bit eight determines the data type data, EOP or EEP

CMOS3V3

EXTOUTEMPTY9*

FIFO ready signal for external output port zero. When high

the FIFO has data. When low the FIFO is empty

CMOS3V3

EXTOUTREAD9*

Asserted Low to read from the external output port zero

FIFO.

CMOS3V3

EXTINFULL9*

FIFO ready signal for external input port zero. When high

there is space in the FIFO so it can be written to. When

low the FIFO is full.

CMOS3V3

EXTINWRITE9*

Asserted Low to write to the external input port zero FIFO.

CMOS3V3

EXTOUTDATA10[8:0]

Output data from external port one FIFO.

Bit eight determines the data type data, EOP or EEP

CMOS3V3

EXTINDATA10[8:0]

Input data from external port one FIFO.

Bit eight determines the data type data, EOP or EEP

CMOS3V3

EXTOUTEMPTY10*

FIFO ready signal for external output port one. When high

the FIFO has data. When low the FIFO is empty

CMOS3V3

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20 21

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